The Worst Advice You Could Ever Get About low starch performance feed

https://horse-feed-range929.novacrestiq.com/posts/what-horse-feed-should-i-use-for-a-stabled-horse-2

Premium horse feed for breeding mares to support fertility, healthy condition and lasting energy throughout gestation and lactation. Formulated with quality protein, calcium, vitamins and minerals for robust foal development and mare health.